Method of manufacturing rolls of tape



pt. 14, 1943- E. RQGOLUB 2,329,527

METHOD OF MANUFACTURiNG ROLLS OF TAPE Filed Jan. 18, 1941 INVENTOR.EDWARD ROBERT GaLus. BY

M ATTORNEYS Patented Sept. 14, 1943 2,329,527 METHOD OF MANUFACTURINGROLLS OF APE Edward Robert Golub, Flushing, N. Y., assignor to AtlanticGummed Paper Corp., a corporation of New York Application January 18,1941, Serial No. 374,971

2 Claims.

This invention relates to a method and means for sealing the ends ofrolls of gummed tape, and more particularly to sealing the ends of papertape wherein one side of the tape is coated with a water soluble glue orother suitable adhesive.

-Such gummed tapes of various widths are commonly sold in rolls andheretofore it has been customary to moisten the free end of the tape andstick it down against the body of the roll as the rolls are made up withthe gummed side of the tape outward. This method of scaling isobjectionable in that it is necessary to peel off one or more layers ofthe tape when unsealing a roll, or to use a knife and cut through theouter plies of the coil to free it, all of which causes waste and lossof time.

Heretofore attempts have been made to overcome the above difficulties byplacing at or near the free end of the roll, a sealing strip-usually apiece of paper or the like-lying across the roll having slots orperforations therein lying between the free end and the body of the rollin such a manner that the free end of the tape can be torn loose fromthe roll, the perforated strip giving way because of its weak texture,thereby freeing the end of the roll. However, the insertion of suchperforated strips in individual rolls requires time, and the instantmethod constitutes an improvement thereover, particularly in connectionwith the manufacture of the rolls.

An object of the present invention is to provide a method of securingthe ends of rolls of gummed tape'to the rolls which is easily applied tothe tapes when they are in web form.

A further object is to provide means for sealing the ends of rolls ofgummed tape, whereby the ends are detachably secured to the rolls andmay be readily pulled off the rolls without, danger of tearing the rollsand with the destruction of a minimum amount of tape.

These and other objects of the invention hereinafter referred to, willnow be illustrated by disclosing the method and means for practicing thesame, reference being had to the following specification and theaccompanying drawing in which- Figure 1 is a sectional view of a sealingstrip suitable for carrying out the method herein disclosed;

Figures 2 and 3 are sectional views of alternate forms of strip;

Figure 4 is a diagrammatic view showing how the sealing strip is appliedto a web in a paper rolling machine;

Figure 5 is a perspective view of one of the paper rolls made inaccordance with Figure 4;

Figure 6 is a side view of the roll shown in Fig. 5; and

Figures 7, 8 and 9 illustrate other forms of sealing strips that may beused in carrying out the method.

For the sake of illustration, the invention will be described as appliedto rolls of gummed paper tape, although it is obvious that it may beapplied to rolls of any material.

Rolls of gummed paper, commonly called tape, are commerciallymanufactured in which the tape varies from a fraction of an inch toseveral inches in width, and such tape is commonly used for sealingpackages and the like. These tapes are commonly made on paper rollingmachines, as for example that shown in U. S. Patent No. 2,050,794 datedAugust 11, 1936, to F. W. Humphner; several types of such machines arein use, and the construction of them is well known and is therefore notherein described in detail.

In such a machine, a web of gummed paper is unwound from a feed paperroll and is severed into a plurality of narrow strips which are woundinto individual rolls of tape.

The paper used is usually gummed on one side and is so wound that thegummed side is uppermost so that these rolls can be readily employed inthe usual counter sealingmachines where the gummed side of the tapeis'moistened as it is withdrawn from the roll.

In Figure 4, the web above referred to is designated by the numeral In.It will be understood that the paper is coming off a feed rollpositioned at the top of thefigure and after slitting, is wound on a.take-off roll at the bottom of the figure, as indicated by the numeralII, the web being severed as shown by the dotted lines at l2, to form aplurality of narrow strips or tape wound on the take-off roll.

After the tapes are formed and before the free ends are released, thesealing strip l3, which is continuous for the total width of the webIt), is placed in position over the rolls andunder the end of the webnext the take-off roll. This sealing strip l3 may be of any of the typeshereinafter described. Its lower face rests upon the upper or gummedsurface [4 of the rolls, and as the strip I3 is moistened previously tobeing placed in the web, it will adhere to this gummed surface. Theupper surface of the sealing strip will, of course, engage the under orungummed surface l5 of the web, and if moistened will adhere thereto, sothat the sealing strip l3 forms a seal for all of the ends of all of therolls in the web.

After being placed in position as just described, the take-up roll maybe revolved slightly to carry the sealing strip slightly beyond thecut-off point, which is determined by placing a string through or acrossthe web as shown at I3, and the rolls are wound up further and thestring pulled to sever the strips. This leaves the free end l6 of eachroll extending slightly beyond the sealing strip l3 and this free endcan be struck down against the roll, as indicated at I! in Figure 6,

when the rolls are removed from the take-off roll or spindle.

The sealing strip is severed between the rolls in the same manner as therolls are severed from the web.

To open a roll of tape for use, it is simply necessary to free the end11, giving it a sharp pull which will detach the sealing strip i 3,whereupon the roll is easily unwound without tearing or loss of thelayer or layers immediately under the first layer.

The sealing strip heretofore generally denoted by the numeral iii in thedrawing, Figures 4 to 6 inclusive, may be of any one of the types shownin Figures 1 to 3 inclusive and 7 to 9, inclusive.

In Figure 1, the sealing strip [8 may be made of a piece of paper, suchas blotting paper, which will easily tear or split. The lower surfacewhich would normally contact With the gummed surface 54 of a roll isshown at I9, and may or may not be gummed; and the upper surface 20,which would contact with the inner ungummed surface i of the end of theroll, is gummed. The adhesive used may be of a type less adhesive thanthat used on the tape, so that the strip adhesive will readily give waywhen the end of the tape is pulled. A suitable adhesive for this purposeis that commonly used on masking tape. This may not require moisteningto apply.

In Figure 2 is shown an alternate form of construction in which suitablepaper or fabric layers El, 22, of the same material are provided which.

are gummed or otherwise adhesively secured together at 23, and these maybe coated on one or both outer surfaces 24, 25, with suitable adhesive.When these are used in the rolls, they will part at the surfaces 23, theadhesion of which is made purposely less than the adhesion of the outersurfaces 24, 25, to the tape.

In Figure 3 is shown an alternate form of construction in which thesealing strip 26 is made of paper or the like, and may be coated on oneor both sides with suitable adhesive; but instead of this adhesiveextending all over both facesof the strip, it only covers parts thereof,as shown at 21, 28, 29, in Figure 7, so that for a given area of thestrip the .adhesion of the strip to the roll would be less than if itwere coated with adhesive over its entire surface. These strips ofadhesive may be pointed toward the front of the strip 1 as shown at 30,which front lies immediately under the end l6 of the roll, so that thisend 16 forms a tab which enables the unsealing of the roll to be easilyaccomplished as the extreme outer end thereof is not securely held tothe roll. With this type of strip, only the adhesive coated portions 21,28, 29, are moistened to make them adhere to the tape.

In Figure 8, the sealing strip may be composed of a piece of blottingpaper or the like, as shown at 3|, which contacts the surface I of theroll, an intermediate layer 32 of a comparatively weak adhesive, and anupper layer 33 of comparatively stifl' paper or the like of differentcharacteristics and greater strength than that at 3| and having theouter gummed surface 34 adapted to adhere to the inner surface l5 of theroll.

In Figure 9, the sealing strip may be of hingelike formation andconsists of a single piece of paper 35 which may be moistened andapplied to the gummed surface ll of the roll and to the inner ungummedsurface 15 thereof, the surface of 35 applied to l5 being gummed, or allof one side of 35 may be gummed. This strip forms a seal for the end I5of the roll, and by pulling I6, the paper 35 will tear at the crease 36;this crease may be scored or perforated to facilitate its easyseparation. The outer face 31 of the strip 35 is not gummed, or ifgummed, the gum is of less adhesive quality per area of surface than thegum used on the tape.

It is obvious that variou combinations of gummed and ungummed surfacescan be provided on the sealing strip, depending on whether the inner orouter surfaces of the rolls are gummed or ungummed, and that the desiredresult of sealing the rolls so that the ends are easily and quicklydetachable, may be obtained in several ways by using the method andsealing strips constructed as herein illustrated and described.

What is claimed is:

1. The method of manufacturing rolls of paper tape which includes, thestep of inserting transversely in a web of paper tape material a sealingstrip adjacent to the outer or free end thereof, said sealing stripbeing at least as long as the entire width of said web and being of Vshaped cross-section'with the open end of the V facing in the samedirection as the end of said web, the further step of adhesivelysecuring said strip to said web adjacent to said end and the body ofsaid web, and the final step of transversely severing said material andsaid strip to form a plurality of said rolls.

2. The method of manufacturing rolls of paper tape which includes, thestep of inserting transversely in a web of paper tape material a sealingstrip adjacent to the outer or free end thereof, said sealing stripbeing at least as long as the entire width of saidweb and being of Vshaped cross-section with the open end of the V facing in the samedirection as the end of said web and weakened at the bottom of the V,the further step of adhesively securing said strip to said web adjacentto said end and the body of said web, and the final tep of transverselysevering said material and said strip to form a plurality of said rolls.

EDWARD ROBERT GOLUB.

